Hay-baler power.



No. 837,691. PATBNTED DEGQ'4, 1906- F. A. LAKE.

HAY BALER POWER. APPLICATION rmw mum 190s P 4m 1 JM 7v 4 'Ufnmgy- ER:cni, wunmaron. n. c

UNITED STATES PATENT OFFIGEE FRANK A. LAKE, OF SPRINGFIELD, OHIO,ASSIGNOR TO INTERNATIONAL 'HARVESTER COMPANY, A CORPORATION OF NEWJERSEY.

HAY-BA'LER POWER.

Patented Dec. 4, 1906.

Application filed June 2, 1906. Serial No. 319,825.

To all w/wm it may concern.-

Be it known that I, FRANK A. LAKE, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented a new and useful Improvement in a Hay-Baler Power, of which thefollowing is a complete specification.

This invention relates to the power mechanism for balers operated byhorse-power, and more particularly to means for absorbing the shockoccasioned by the rebound of the plunger.

The improvement is applied to a pullpress, by which is meant a press inwhich the plunger is pulled instead of pushed; and the object in view isto prevent the sudden release and consequent shock of the powerarm bythe sweep-arm, and thereby avoid breaking of the power-arm or otherparts.

The preferred form of the improvement is embodied in the accompanyingdrawing, in which is shown a plan perspective of the principal parts ofa horse-power for balers, illustrating the application of the saidimprovement.

In the drawing, 1 designates the axle on which the power-frame 2 ismounted, the supportin -wheels for said axle not being shown. sweep-arm3 is pivotally mounted on the frame 2, its pivotal axis being at 4, andto this sweep-arm is secured the sweeplever 5. A roller 6 is journaledon the end of the sweep-arm 3, this roller constituting the point ofengagement between the said sweeparm and the ower-arm 7. The power-arm7, which is pivotally mounted on the frame 2 at 8, is rovided with acam-surface 9, adapted to be impinged by the roller 6. An extension 7 ofthe power-arm 7 projects outwardly from the outer end thereof, and onthis extension is mounted the yieldinglyheld cushioning-lever 10, whichin conjunction with the end of the power-arm'7 forms a gate throughwhich the roller 6 passes as it leaves the cam-surface 9. The lever 10pivots at 11, and the long or roller-engaging end 10 thereof is bent, asshown, to form a curved track for the rollers 6 on the sweeparm 3. Theother end of the lever 10 defleets sharply from near its pivotal axis,and a tension-spring 12 is interposed between the bent end 10 0f thelever 10 and an arm 13, which is secured to and projects outwardly fromthe end of extension 7 of the powerarm 7.

A gear-segment 7 2 is formed on the arm 7, and anotherindependently-mounted gearsegment 14, pivoted at 14, meshes therewith.The segment 14 is provided with a cam-surface 14 adapted to be engagedby the roller 6 and in this manner cause the positive return of theplunger through the powerarm 7 and the plunger draw-bar 15 in a mannerfamiliar to those acquainted in this art.

The operation of the device is obvious. As the sweep 5 is drawn in thedirection of the arrow the rollers 6 (the one beneath the sweep 5 notbeing shown) on leaving thecam-surface 9 will be brought into contactwith the yielding gate or lever 10. The stress in the draw-bar 15 beingin the direction of the arrow and roduced by the elasticity in thecharge of ay will draw the arm 7 rearwardly or toward the bottom of thedrawing, and the roller 6 will be forced through the gate 10, or ratherthe gate will retard the return of the plunger and absorb the shock. Inthis manner the gate or lever 10 forms a yielding engagement with thesweep-lever 3 after the normal contact between the said lever andpower-arm 7 has ceased. The force of the rebound is taken u by the sweep5, but is a rearward ull tlibreon instead of a forward thrust. he sweepis thus not thrown forward, as is usual in such construction, and thedoubletrees and neck-yoke are prevented from injuring the draft-horses.The rearward pull on the sweep 5 as the lever 10 is being drawn past theroller 6 is relatively slight and entirely without objection.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a power mechanism for hay-balers, in combination, a power-frame, apowerarm pivotally mounted thereon, a sweep-lever for actuating saidarm, a draw-bar, and means mounted on said power-arm for yieldinglyengaging the sweep-lever and absorbing the shock accompanying said arm'sreturn.

2. In a power mechanism for hay-balers, in combination, a power-frame, apowerarm pivotally mounted thereon, a sweep-lever for' actuating saidarm, a draw-bar, and means arranged to form a yielding engagementbetween the said sweep-lever and power-arm after the normal contactbetween these members has ceased.

3. In a power mechanism for hay-balers, in combination, a ower-frame, asweep and sweep-arm pivota ly mounted thereon, a power-arm provided witha cam-surface adapted to be engaged by said sweep-arm,rtw

and a yieldingly-held lever pivotally mounted on said power-arm andarranged to be impinged by the sweep-arm after said sweeparm hasdisengaged the power-arm.

4. In a power mechanism for hay-balers, in combination, a power-frame, asweep and sweep-arm pivotally mounted thereon, a

power-arm eccentricall'y mounted with respect to the sweep, said armhaving a camsurface in connection therewith adapted to be impinged bysaid sweep-arm, a cushioning-lever pivotally mounted on the end of saidpower-arm and arranged to be contacted when in normal position by theengaging point on the said sweep-arm after said engaging point has leftthe cam-surface on the power-arn1, and a spring for holding saidcushioning lever normally and yieldi-ngly in the path of travel of theengagingpoint on the sweep-arm.

FRANK A. LAKE. Witnesses W. H. GUTHRIE, C. O. Roors.

